The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2018
Filed:
Mar. 18, 2013
Lg Chem, Ltd., Seoul, KR;
LG Chem, Ltd., , KR;
Abstract
Disclosed herein is an electrode group stack including a plurality of electrode groups, each of which includes a cathode, an anode, and a first separator disposed between the cathode and the anode, and a second separator disposed between the electrode groups, wherein the electrode groups are stacked in a height direction on the basis of a plane, some or all of the electrode groups have different areas of opposite stack surfaces at a stack interface therebetween, and the electrode group stack includes an electrode group satisfying equation (1): T≥(Tsum×0.5) (1), where T indicates a thickness of an arbitrary electrode group and Tsum indicates a sum of thicknesses of the electrode groups constituting the electrode group stack.